<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'
import { statisticsEliminateInfo } from '@/api/charts'

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    }
  },
  data() {
    return {
      chart: null,
      eliminateInfo: [
        { 'preliminary': '初筛淘汰' },
        { 'view': '面试淘汰' },
        { 'sys': '系统过滤' }
      ]
    }
  },
  mounted() {
    statisticsEliminateInfo().then(response => {
      const yaxisData = []
      const xaxisData = []
      this.eliminateInfo.forEach(item => {
        xaxisData.push(item[Object.keys(item)[0]])
        yaxisData.push(response.result[Object.keys(item)[0]])
      })
      this.initChart(xaxisData, yaxisData)
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart(xaxisData, yaxisData) {
      this.chart = echarts.init(this.$el, 'macarons')

      this.chart.setOption({
        tooltip: {
          trigger: 'axis',
          axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        grid: {
          top: 10,
          left: '2%',
          right: '2%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [{
          type: 'category',
          data: xaxisData
        }],
        yAxis: [{
          type: 'value',
          axisLabel: {
            formatter: function(value) {
              return value.toFixed(4) * 100 + '%'
            }
          }
        }],
        series: [{
          data: yaxisData,
          type: 'bar',
          barWidth: '20%'
        }]
      })
    }
  }
}
</script>
